I'm going to Germany to be an entrepreneurial immigrant. Is there an immigration supervisor in Germany?

Germany is a typical non-immigrant country, and there is no so-called entrepreneurial immigration and immigration supervision. The entrepreneurial immigrants you mentioned are indirect immigrants, that is, they go to Germany to invest and set up a company, operate normally for several years, pay taxes according to regulations every year, and hire local people regularly. After living for several years, they can apply for a long-term residence visa and apply for naturalization in Germany. However, Germany has never had an investment immigration policy similar to that of the United States and Canada, and it is impossible to obtain naturalization opportunities in a short time (the above immigration method will take at least 8- 10 years to complete).